JP4025338B2 - Easy-to-open sealed container - Google Patents

Easy-to-open sealed container Download PDF

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Publication number
JP4025338B2
JP4025338B2 JP2005231389A JP2005231389A JP4025338B2 JP 4025338 B2 JP4025338 B2 JP 4025338B2 JP 2005231389 A JP2005231389 A JP 2005231389A JP 2005231389 A JP2005231389 A JP 2005231389A JP 4025338 B2 JP4025338 B2 JP 4025338B2
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JP
Japan
Prior art keywords
film
peeling
container
flange
flange portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2005231389A
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Japanese (ja)
Other versions
JP2007045454A (en
Inventor
薫 藤村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujimura Kogyo Co Ltd
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Fujimura Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujimura Kogyo Co Ltd filed Critical Fujimura Kogyo Co Ltd
Priority to JP2005231389A priority Critical patent/JP4025338B2/en
Priority to US11/988,914 priority patent/US7762421B2/en
Priority to PCT/JP2006/315979 priority patent/WO2007018300A1/en
Priority to CN200680028866A priority patent/CN100595112C/en
Priority to KR1020087001632A priority patent/KR100939513B1/en
Publication of JP2007045454A publication Critical patent/JP2007045454A/en
Application granted granted Critical
Publication of JP4025338B2 publication Critical patent/JP4025338B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/76—Making non-permanent or releasable joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2424—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain
    • B29C66/24243—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral
    • B29C66/24244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral forming a rectangle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/345—Progressively making the joint, e.g. starting from the middle
    • B29C66/3452—Making complete joints by combining partial joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • B29C66/81465—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed behind the other in a single row in the feed direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)

Description

本発明は、プラスチック製パック容器の開口を密閉するために、開口を囲んでいるフランジ部に密封用フィルムを接着した構成を有する密封容器に関するものである。   The present invention relates to a sealed container having a structure in which a sealing film is bonded to a flange portion surrounding the opening in order to seal the opening of the plastic pack container.

例えばパック入りの豆腐は、プラスチックより成るパック容器の中に豆腐を入れ、同じくプラスチックより成るフィルムにより接着し、密封したものであるが、商品の性質上、接着が完全に行われているため、パックの接着部を手で剥がすことは非常に困難であり、そのため類似商品の中でも最も開けにくい包装の筆頭に挙げられている。このような豆腐パックは陳列ケースにある間、不用意に取り扱われても剥がれる恐れがなく、その点安心していられるが、いざ開けるとなるとナイフや包丁でフィルムを切り開く作業が必要となる。豆腐は重く、形をくずしやすい点他に類がなく、密封の完全性と開封の容易性という矛盾した要求を満たす容器を必要とする。しかし、このような要求を満足する容器は他に知られていない。   For example, tofu with a pack is made by putting tofu in a plastic container and bonded and sealed with a film made of plastic, but due to the nature of the product, it is completely bonded, It is very difficult to peel the adhesive part of the pack by hand, so it is listed as the most difficult package to open among similar products. While such a tofu pack is in the display case, there is no fear that it will be peeled off even if it is handled carelessly, and in that respect it can be relieved, but if it is opened, it will be necessary to open the film with a knife or knife. Tofu is heavy, easy to break shape, and requires a container that meets the contradicting requirements of sealing integrity and ease of opening. However, no other container is known that satisfies such requirements.

内容物を充填包装する技術については特開平１０−１１９９３６号のものがあり、同号の発明は底材に蓋材と非融着性の剥離部を部分的に形成したもので、剥離部を指先でつまんで開封することにより、開封のきっかけを与えようとするものである。しかし、パック容器の隅に非融着性の剥離部を設けても、接着の完全な豆腐パックの開封が容易化することは考えられない。容器が柔軟なため、力を込めて押さえていることができないからである。また特開２００２−２１１６４７号は、液汁を含む漬け物が入っている包装用容器について、密閉性を十分に得るとともに開封を簡単に行えるようにするために、開閉扉を覆うラベルを蓋体表面に貼付するという構成を有している。しかしこれでは切り込みで囲まれた開閉扉から液漏れの生ずる恐れがあり、また開閉扉が容器本体より相当小さいため豆腐類を取り出すのが困難である。   As for the technology for filling and packaging the contents, there is one disclosed in Japanese Patent Application Laid-Open No. 10-119936, and the invention of the same is a part in which a cover material and a non-fusible peeling part are partially formed on a bottom material. It is intended to give an opportunity to open by pinching with a fingertip. However, even if a non-fusible peeling portion is provided at the corner of the pack container, it is not considered that the tofu pack with perfect adhesion can be easily opened. This is because the container is flexible and cannot be pressed with force. Japanese Patent Laid-Open No. 2002-21647 discloses a packaging container containing pickles containing liquid soup with a label covering the door on the lid surface in order to obtain sufficient sealing and allow easy opening. It has the structure of sticking. However, this may cause liquid leakage from the opening / closing door surrounded by the cut, and it is difficult to take out the tofu because the opening / closing door is considerably smaller than the container body.

そこで本発明者は先にパック容器の開口を取り巻くフランジ部を折って切断することにより、強固なシール部にてフィルムを剥がさなくても容易に内容物を取り出し得るようにした、折り切り部付き密封容器を開発し、その成果について特許出願を行っている。それらの発明は、フランジ部を折り切るために折り切り用溝を形成したものである。しかし溝部分の強度を低く設定する必要上、容器メーカーの出荷時点からフランジ部が折れ曲がる可能性があり、食品包装工程や店頭陳列時においても折れ曲がる機会があるため、取り扱いに不安があるという指摘があった。溝部分で折れ曲がってもそれだけでは内容物が漏れ出てしまう心配はないが、折れているということが不安感をひき起こすものである。しかし開封方法を説明しても良くは分からない人もおり、折り切るためにはフランジ部を端から端まで完全にしかも１８０度折り曲げることが必要であり、ワンタッチ開封とはいい難いという面があった。開封にてこずると容器を破損して思わぬ箇所から内容物が漏れ出る可能性もあり、場合によっては折り切ることができず、なお改良の余地があった。   Therefore, the present inventor previously folded and cut the flange portion surrounding the opening of the pack container so that the contents can be easily taken out without peeling off the film with a strong seal portion. A sealed container has been developed and a patent application has been filed for the results. In those inventions, a folding groove is formed to fold the flange portion. However, it is necessary to set the strength of the groove part low, and there is a possibility that the flange part may be bent from the shipping time of the container manufacturer, and there is an opportunity to bend during the food packaging process and store display, so it is pointed out that the handling is uneasy there were. Even if it bends at the groove, there is no worry that the contents will leak out, but the fact that it is broken causes anxiety. However, some people do not know how to open, and in order to break it, it is necessary to bend the flange part from end to end completely and 180 degrees, and it is difficult to open one-touch. It was. If the container is opened, the container may be damaged, and the contents may leak from an unexpected location. In some cases, the container cannot be broken and there is still room for improvement.

特開平１０−１１９９３６号Japanese Patent Application Laid-Open No. 10-119936 特開２００２−２１１６４７号JP 2002-21647 A

本発明は前記の事情に着目してなされたもので、その課題は、密封容器を確実かつ容易に開封し得るようにすることである。また本発明の他の課題は、製造の容易な密封容器を提供することである。   The present invention has been made paying attention to the above-described circumstances, and its object is to enable the sealed container to be opened reliably and easily. Another object of the present invention is to provide a sealed container that is easy to manufacture.

前記の課題を解決するため、本発明は、プラスチック製パック容器の開口を密閉するために、開口を囲んでいるフランジ部に密封用フィルムを接着した構成を有する密封容器について、フランジ部を、開口寄りの内側部分と周縁寄りの外側部分との内外２部分に分離可能な構造とし、フランジ部の下面に剥離用フィルムを接着し、剥離用フィルムの一部にフランジ部より外方又は内方へ張り出した剥離開始部を設け、剥離用フィルムをフランジ部に沿って剥離することにより、フランジ部を内外２部分に分離した切り離し線と、内外２部分を連絡しているブリッジ部とを露出可能にするという手段を講じたものである。   In order to solve the above-described problems, the present invention relates to a sealed container having a structure in which a sealing film is bonded to a flange part surrounding the opening in order to seal the opening of the plastic pack container. It is structured to be separable into inner and outer two parts, an inner part near the edge and an outer part near the periphery, and a peeling film is adhered to the lower surface of the flange part, and outward or inward from the flange part to a part of the peeling film By providing an overhanging peeling start part and peeling the peeling film along the flange part, the separation line separating the flange part into the inner and outer two parts and the bridge part connecting the inner and outer two parts can be exposed. It is a measure to do.

本発明に係る密封容器は、プラスチック製パック容器の開口部を、密封用フィルムで覆いかつシールしたものであり、このシール部を手で剥がすことが非常に困難なものであることは、従来のものと共通していると考えて良い。この困難性を克服しかつ密封の完全性を維持するために、本発明では、開口部を囲むように設けられている、フランジ部の上面又は下面に補強機能を有する剥離用フィルムを接着するとともに、フランジ部の上面には密封用フィルムを接着する。このようにして下面及び上面に剥離用と密封用のフィルムが夫々接着されるフランジ部を、内側部分と外側部分に予め分離可能な状態にしておくものである。   The sealed container according to the present invention is one in which the opening of a plastic pack container is covered and sealed with a sealing film, and it is very difficult to peel off this seal part by hand. You can think of it as something in common. In order to overcome this difficulty and maintain the integrity of the seal, the present invention adheres a peeling film having a reinforcing function to the upper surface or the lower surface of the flange portion, which is provided so as to surround the opening. A sealing film is bonded to the upper surface of the flange portion. In this way, the flange portion where the peeling film and the sealing film are bonded to the lower surface and the upper surface, respectively, is in a state that can be separated into the inner portion and the outer portion in advance.

このフランジ部が内側部分と外側部分に分離可能にされているために、フランジ部が折れ曲がってしまうということはない。何故なら内側部分と外側部分に分離可能な状態にあるフランジ部は、開口部を密封する密封用フィルムで上面が接着されると同時に、補強機能を有する剥離用フィルムによっても、例えば下面にて接着されているものであり、従って上面、下面の両面においてフィルムで内側部分と外側部分の一体性を保持しているからである。   Since the flange portion is separable into the inner portion and the outer portion, the flange portion is not bent. This is because the flange portion, which can be separated into the inner portion and the outer portion, is bonded to the upper surface with a sealing film that seals the opening, and at the same time, with a peeling film having a reinforcing function, for example, bonded to the lower surface. This is because the integrity of the inner part and the outer part is maintained by the film on both the upper surface and the lower surface.

フランジ部の分離可能な構造は、どのような手段、方法で形成しても良い。例えば一体のフランジ部を切断により内側部分と外側部分に分離可能な構造としても良いし、内側部分だけを有する幅の狭いフランジ部に、外側部分を突き合わせて、ブリッジ部により一体的に形成しても良いし、容器メーカーでの真空成形時に、フランジ部の内側部分と外側部分がブリッジ部によって一体となっている容器を形成しても良い。即ち、フランジ部の分離可能な構造は、フランジ部を内外２部分に分離した切り離し線と内外２部分を連絡しているブリッジ部とから成る、破線ないし鎖線状の切り離し構成とする。   The separable structure of the flange portion may be formed by any means and method. For example, it is good also as a structure in which an integral flange part can be separated into an inner part and an outer part by cutting, or the outer part is abutted against a narrow flange part having only the inner part and formed integrally with the bridge part. Alternatively, at the time of vacuum forming at the container manufacturer, a container in which the inner part and the outer part of the flange part are integrated by the bridge part may be formed. That is, the separable structure of the flange portion is a broken line or chain-lined separation structure composed of a separation line separating the flange portion into two inner and outer portions and a bridge portion connecting the inner and outer two portions.

フランジ部の分離可能な構造は、パック容器の開口部を囲むように設けられているフランジ部の全域に設けられていても良いし、また一部だけに設けられていても良い。また切り離し線は、一筆書き式につながったものであっても良いし、またそうでなくても良い。   The separable structure of the flange portion may be provided in the entire flange portion provided so as to surround the opening of the pack container, or may be provided only in a part. In addition, the separation line may be connected to a one-stroke drawing type, or may not be so.

フランジ部の下面と上面のどちらの面においても、補強機能を有する剥離用フィルムと密封用フィルムが接着されており、かつ接着箇所がフランジ部の内側部分と外側部分の両側部分にわたっていることは、どれも必要な要件である。しかし接着には、強い接着即ち剥がし難い接着と、弱い接着即ち剥がし易いとを併用することが良い結果を生む。この強接着部は密封用フィルムと外側部分との接着部に適用し、また弱接着部は密封用フィルムと内側部分との接着部及び剥離用フィルムと内側部分ないし外側部分の接着部の両方に適用することが望ましい。   In both the lower surface and the upper surface of the flange portion, the peeling film having a reinforcing function and the sealing film are bonded, and the bonding portion extends over both the inner portion and the outer portion of the flange portion, All are necessary requirements. However, for the adhesion, a combination of strong adhesion, that is, difficult to peel off, and weak adhesion, that is, easy to peel off, produces a good result. This strong adhesive part is applied to the adhesive part between the sealing film and the outer part, and the weak adhesive part is applied to both the adhesive part between the sealing film and the inner part and the adhesive part between the peeling film and the inner part or the outer part. It is desirable to apply.

さらに剥離開始部を、剥離用フィルムの外方又は内方へ張り出すように設けてここからフランジ部に沿った縦方向の剥離を開始させるものとする。剥離開始部は、剥離用フィルムに張り出し部を設けるなどの手段方法によって形成することができるが、剥離用フィルムに何箇所かにわたって設けても良いし、また一箇所だけに設けても良い。この構成により、剥離開始部はパック容器のフランジ部の外方又は内方に位置することになり、内方の位置は、外観上、目に付きにくい位置であるが、手でパック容器を持った場合には、フランジ部を摘み持つ指先が触れる位置であるので、何だろうか？という疑問を持たせ、開封手段であるということに気付くきっかけを与えることになる。外方のものは明らかに分かり易い。この剥離開始部には目立たせるように着色を施すことができる。   Furthermore, a peeling start portion is provided so as to project outward or inward from the peeling film, and from here, longitudinal peeling along the flange portion is started. The peeling start part can be formed by a means method such as providing an overhanging part on the peeling film, but may be provided on several places on the peeling film, or may be provided only at one place. With this configuration, the peeling start portion is positioned outside or inward of the flange portion of the pack container, and the inner position is a position that is not easily noticeable in appearance, but holds the pack container by hand. If so, what is the fingertip holding the flange? This gives us a chance to realize that it is a means of opening. The outside one is clearly understandable. The peeling start portion can be colored so as to stand out.

以上の説明において、剥離用フィルム及び密封用フィルムと、ともにフィルムという文言を用いているが、これはどちらも同じか或いは同様のものであっても良いが、同じものであるということを意味しない。剥離用フィルムは、分離部において内側部分と外側部分に２分されるフランジ部を補強するものであり、そのために厚手の素材を使用するのに対して、密封用フィルムはその必要がない。この条件を反映する必要があるならば、１００分の１インチ即ち約０．２５ｍｍ以上の厚さに対する通称シートの方が剥離、補強用にはより適切であり、密封用には約０．２５ｍｍ以下で良いということができる。   In the above description, the word “film” is used for both the peeling film and the sealing film, but this may be the same or similar, but does not mean that they are the same. . The peeling film reinforces the flange portion that is divided into an inner portion and an outer portion in the separation portion. For this reason, a thick material is used, but a sealing film is not necessary. If it is necessary to reflect this condition, the common sheet for a thickness of 1/100 inch, ie, about 0.25 mm or more is more suitable for peeling and reinforcing, and about 0.25 mm for sealing. The following can be said.

パック容器は、ポリエチレンテレフタレート、ポリエステル、ポリプロピレン、ポリエチレン又はこれらと同効の素材より成り、密封用フィルム及び剥離用フィルムの接着されている状態では、フランジ部が切り離し線で折り曲げられることのない強度を有しているものであることが望ましい。しかしブリッジ部は、剥離用フィルムを剥離し、露出された段階では、指先によって容易に破断されるものでなければならない。このような或る限定的な強靭性を有する材料として前記の樹脂が適しているものである。   The pack container is made of polyethylene terephthalate, polyester, polypropylene, polyethylene or a material having the same effect as the above, and in a state where the sealing film and the peeling film are adhered, the flange portion has a strength that is not bent by the separation line. It is desirable to have it. However, the bridge portion should peel off the peeling film and be easily broken by the fingertip when exposed. Such a resin is suitable as a material having a certain limited toughness.

本発明は以上の如く構成されかつ作用するものであるから、剥離開始部が分かりやす
く、フランジ部に沿って縦方向に剥離することにより開封が容易であり、またパック容器を取り扱う製造業者、豆腐などの商品をパックする業者、パック容器入り商品を運搬する業者及び販売する業者、或いは末端の消費者に、開封の不安、例えば製造、流通過程で誤って開封してしまうのではないかという不安や、商品を手にした消費者が、途中で開封されているのではないかという不安を抱かせることがないという効果を奏する。 Since the present invention is configured and operates as described above, the peeling start portion is easy to understand, and it can be easily opened by peeling in the longitudinal direction along the flange portion. Unpacking concerns, such as manufacturing and distribution processes, to the merchant that packs products such as, those that transport and sell merchandise in packed containers, or end consumers. In addition, there is an effect that a consumer who has a product does not have anxiety that the product is opened in the middle.

以下図示の実施形態を参照して本発明を、より詳細に説明する。図１〜図３は、本発明に係る開封容易な密封容器の第１の例を示すもので、１１はパック容器、１２はフランジ部であり、破断部１９を境として内外に位置する内側部分１３と外側部分１４とを有している。また、１５は密封用フィルム、１６は補強機能を有する剥離用フィルムであり、フランジ部１２の下面に内側部分１３と外側部分１４の２部分にわたって接着されている。１７は内側接着部、１８は外側接着部である。なお、密封用フィルム１５の接着は、パック容器１１に、例えば豆腐などの商品が収められたのちに行われる。   Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. 1 to 3 show a first example of an easily opened sealed container according to the present invention, 11 is a pack container, 12 is a flange part, and an inner part located inside and outside with a break part 19 as a boundary. 13 and an outer portion 14. Reference numeral 15 denotes a sealing film, and reference numeral 16 denotes a peeling film having a reinforcing function, which is bonded to the lower surface of the flange portion 12 over two portions, an inner portion 13 and an outer portion 14. Reference numeral 17 denotes an inner adhesive portion, and 18 denotes an outer adhesive portion. The sealing film 15 is bonded after a product such as tofu is stored in the pack container 11.

第１の例において、破断部１９は、フランジ部１２を内側部分１３と外側部分１４に分かち、外側部分１４を分離可能にする部分であり、切り離し線１９ａと、未だ切り離れていないブリッジ部１９ｂとを有している。例示の破断部１９は長い切り離し線１９ａの間に極く短いブリッジ部１９ｂを配置したもので、切り離し線１９ａ、ブリッジ部１９ｂの長さや幅の寸法は任意に決めることができ、ブリッジ部１９ｂについては、剥離用フィルム１６を接着するまでの内側部分１３と外側部分１４の離反防止と、開封時の破断容易性の両方の条件を満足するものでなければならない。フランジ部１２に密封用フィルム１５及び剥離用フィルム１６の接着されている開封前の状態では、フランジ部１２に折り曲げ力が働いてもブリッジ部１９ｂは破断しない条件に置かれている。例えばパック容器１０が豆腐１丁用のものでシート厚０．４ｍｍのポリプロピレン製である場合、加工機のナイフによって形成される切り離し線１９ｂの長さは例えば２５ｍｍ、幅は目視により線としてほぼ分かる状態（約０．１ｍｍほどか）の場合、ブリッジ部１９ｂの長さは約０．１〜０．３ｍｍの範囲で良く、これは注意しなければ分からない程度の大きさである。図４、図５は、この切り離し部１９ａとブリッジ部１９ｂを形成したパック容器単体の形態を示している。上記の数値は、あくまで例示であり、シート、フィルムの厚さや、パック容器の大きさ等の条件に応じて任意に選択することができる事項である。   In the first example, the fracture portion 19 is a portion that divides the flange portion 12 into an inner portion 13 and an outer portion 14 and enables the outer portion 14 to be separated, and includes a separation line 19a and a bridge portion 19b that has not yet been separated. And have. The illustrated break portion 19 has a very short bridge portion 19b disposed between long cut lines 19a. The length and width dimensions of the cut line 19a and the bridge portion 19b can be arbitrarily determined. Must satisfy both conditions of prevention of separation of the inner portion 13 and the outer portion 14 until the peeling film 16 is bonded, and ease of breakage at the time of opening. In a state before opening, in which the sealing film 15 and the peeling film 16 are bonded to the flange portion 12, the bridge portion 19 b is not broken even if a bending force is applied to the flange portion 12. For example, when the pack container 10 is for 1 tofu and is made of polypropylene having a sheet thickness of 0.4 mm, the length of the separation line 19b formed by the knife of the processing machine is, for example, 25 mm, and the width is almost visually recognized as a line. In the state (about 0.1 mm or so), the length of the bridge portion 19b may be in the range of about 0.1 to 0.3 mm, which is a size that cannot be understood unless care is taken. 4 and 5 show the form of a single pack container in which the separation part 19a and the bridge part 19b are formed. The above numerical values are merely examples, and can be arbitrarily selected according to conditions such as the thickness of the sheet and film and the size of the pack container.

第１の例の密封容器を形成する場合、加工機のナイフによってフランジ部１２に破断部１９を形成する。この破断部１９はブリッジ部１９ｂによって内側部分１３と外側部分１４が離反しないようになっている（図６）。フランジ部１２に剥離用フィルム１６を内側接着部１７と外側接着部１８で接着する（図７）。接着強度は内側接着部１７と外側接着部１８の両方とも弱い接着で良いが、剥離用フィルム１６は接着温度を高くしても弱い接着のままである素材を使用する。その後密封用フィルム１５をフランジ部上面に内側部分１３と外側部分１４の２部分にわたって接着する（図８）。２３は内側接着部で、弱い接着とし、２４は外側接着部で、強い接着とする。密封用フィルム１５は接着温度によって接着強度が強くなる素材を用いることが望ましい。   When forming the sealed container of the first example, the fracture portion 19 is formed in the flange portion 12 with a knife of a processing machine. The broken portion 19 is configured such that the inner portion 13 and the outer portion 14 are not separated by the bridge portion 19b (FIG. 6). The peeling film 16 is bonded to the flange portion 12 by the inner bonding portion 17 and the outer bonding portion 18 (FIG. 7). The adhesive strength of both the inner adhesive portion 17 and the outer adhesive portion 18 may be weak adhesion, but the peeling film 16 is made of a material that remains weak even when the adhesion temperature is increased. Thereafter, the sealing film 15 is adhered to the upper surface of the flange portion over the two portions of the inner portion 13 and the outer portion 14 (FIG. 8). Reference numeral 23 denotes an inner bonding portion which is weakly bonded, and 24 is an outer bonding portion which is a strong bond. The sealing film 15 is preferably made of a material whose adhesive strength increases with the bonding temperature.

補強用機能を有する剥離用フィルム１６は、フランジ部１２の下面の幅及び長さを有する額縁形状に形成されており（図９）、４辺が連続している。剥離用フィルム１６の一部には、フランジ部１２より外方へ張り出した剥離開始部２１が設けられている。例示の剥離開始部２１は、角に当たる位置に２箇所指先状に形成されており、剥離用フィルム１６の幅よりも幅広に設けられかつ張り出した部分の付け根に切り込み２２を有していて、剥離用フィルム１６を切り込み２２の位置で確実に横に分断し、縦に剥離が進行し得るようになっている。剥離開始部２１には目立つように着色を施しても良い。   The peeling film 16 having a reinforcing function is formed in a frame shape having a width and a length of the lower surface of the flange portion 12 (FIG. 9), and four sides are continuous. A part of the peeling film 16 is provided with a peeling start part 21 projecting outward from the flange part 12. The illustrated peeling start portion 21 is formed in two fingertips at a position corresponding to a corner, has a cut 22 at the base of the protruding portion that is wider than the width of the peeling film 16, and peels off. The film 16 is surely divided horizontally at the position of the notch 22 so that peeling can proceed vertically. The peeling start portion 21 may be conspicuously colored.

図９の剥離用フィルム１６は、図１０に示すように、伏せたパック容器１１に対して、剥離用フィルム１６の上から高温のヒーターで押すことにより接着することができる。なお、このパック容器１１のフランジ部１２には切り離し線１９ａとブリッジ部１９ｂが既に形成されている。図１０の剥離用フィルム１６をフランジ部１２に接着したパック容器１１に、豆腐、こんにゃく等の被包装物２５を包装するものであるが（図１１）、包装工程については、図３０を参照して後に詳述する。上記においては豆腐製造業者が個々に本発明のパック容器１１を生産する工程の一部として、既存のパック容器１１に剥離用フィルム１６を接着する例に言及しているが、容器メーカーにおいて本発明を実施する工程については後述する。   As shown in FIG. 10, the peeling film 16 in FIG. 9 can be adhered to the faced pack container 11 by pressing it from above the peeling film 16 with a high-temperature heater. Note that a separation line 19 a and a bridge portion 19 b are already formed in the flange portion 12 of the pack container 11. A package container 25 such as tofu and konjac is packaged in a pack container 11 in which the peeling film 16 of FIG. 10 is bonded to the flange portion 12 (FIG. 11). For the packaging process, refer to FIG. The details will be described later. In the above description, the tofu manufacturer individually refers to an example in which the peeling film 16 is adhered to the existing pack container 11 as part of the process of producing the pack container 11 of the present invention. The process of performing will be described later.

図１２〜図１４は、これまでに述べた剥離開始部２１を外方へ張り出して設けた密封容器１０の開封方法を示している。開封開始時には剥離開始部２１を指先で摘んで下方へ引き、ノッチ状の切り込み２２にて剥離用フィルム１６を分断し（図１３）、弱接着部（１７、１８）をフランジ部１２に沿って縦に剥がして行く。剥離用フィルム１６を全部剥がして取り除くと、切り離し線１９ａとブリッジ部１９ｂが露出するので（図１３は裏面を示している。）、破断部１９のブリッジ部１９ｂを破断しながら密封用フィルム１５を剥がすことができる。ブリッジ部１９ｂが破壊されると、上面内側の弱接着部分２３で密封用フィルム１５が接着しているだけであるから、フランジの全幅に亘って完全接着していた従来の密着用フィルムを剥がすのに必要な力と比較すると、２分の１以下の力で開封できることとなる。   FIGS. 12-14 has shown the opening method of the sealed container 10 which extended and provided the peeling start part 21 described so far outward. At the start of opening, the peeling start portion 21 is picked with a fingertip and pulled downward, and the peeling film 16 is divided by a notch-shaped cut 22 (FIG. 13), and the weakly bonded portions (17, 18) are formed along the flange portion 12. Remove it vertically. When the peeling film 16 is completely peeled off and removed, the separation line 19a and the bridge portion 19b are exposed (FIG. 13 shows the back surface), so that the sealing film 15 is removed while breaking the bridge portion 19b of the breaking portion 19. Can be peeled off. When the bridge portion 19b is destroyed, the sealing film 15 is only adhered to the weakly bonded portion 23 on the inner side of the upper surface. Therefore, the conventional adhesion film that has been completely adhered over the entire width of the flange is peeled off. Can be opened with less than half the force.

剥離開始部２１は、これまでの図１〜図１４の例のように外方へ張り出す形式の場合、対角線状に２箇所と限らず図１５に示すようにただ１箇所でも全周を剥がすことは容易である。図１６は４隅に夫々剥離開始部２１を設けたもので、長短４辺を別々に剥がすことができる例を示す。また図１７はパック容器１１の３辺に接着するほぼＣ字型に形成した剥離用フィルム１６′の例であり、先端に、パック容器１１のフランジ部１２より外方へ張り出した剥離開始部２１を形成している。図１８はパック容器１１の２辺に接着するほぼＬ字型の剥離用フィルム１６″の例である。   In the case of a type that projects outward as in the examples of FIGS. 1 to 14 so far, the peeling start portion 21 peels the entire circumference even at only one location as shown in FIG. It is easy. FIG. 16 shows an example in which the peeling start part 21 is provided at each of the four corners, and the long and short sides can be peeled separately. FIG. 17 shows an example of a peeling film 16 ′ formed in a substantially C-shape that adheres to the three sides of the pack container 11, and the peeling start part 21 projecting outward from the flange part 12 of the pack container 11 at the tip. Is forming. FIG. 18 shows an example of a substantially L-shaped peeling film 16 ″ that adheres to two sides of the pack container 11.

さらに剥離開始部は、これまでの例と異なりフランジ部１２より内方へ張り出した構成とすることができる。図１９〜図２３は内方張り出しの諸例を示す。図１９〜図２１は、剥離用フィルム１６の角ではなく辺部の中間位置に設けた剥離開始部３１の例示であり、剥離に方向性を与えるために斜めに張り出させ、かつ斜めの切り込み３２をその付け根に設けている。なお、以下の説明において、第１の例と共通する構成については、符号を援用し、詳細な説明を繰り返さない。剥離開始部３１の数や位置は任意に変更可能であり、図２２には１個だけ剥離開始部３１を有する例、図２３には４辺に各１個ずつ計４個の剥離開始部３１を有する例を示している。   Furthermore, unlike the previous examples, the peeling start portion can be configured to protrude inward from the flange portion 12. 19 to 23 show examples of inward projection. FIGS. 19-21 is an illustration of the peeling start part 31 provided not in the corner of the peeling film 16 but in the middle position of the side part. In order to give direction to the peeling, the film is obliquely projected and the diagonal cut is made. 32 is provided at the base. In the following description, reference numerals are used for configurations common to the first example, and detailed description is not repeated. The number and position of the peeling start parts 31 can be arbitrarily changed. FIG. 22 shows an example having only one peeling start part 31, and FIG. 23 shows a total of four peeling start parts 31, one on each of the four sides. The example which has is shown.

これまでの例では、角型のパック容器１１を対象とした例のみ説明して来たが、円型のパック容器にも本発明を適用可能であり、その場合を剥離用フィルム３６の例示によって説明すると図２４〜図２７のようになる。円型パック容器の開口を密封する密封用フィルムも、図１〜図８に示したのと同様にパック容器に接着される。図２４は、円型リング状の剥離フィルム３６にただ１個だけ外向きの剥離開始部４１を傾斜状に設けた例であり、全体を一時に剥がすことができ、図２５の例は１８０度間隔で２個外向きの剥離開始部４１を設けた例を示す。４２は切り込み部であり、同様に傾斜している。   In the examples so far, only the example for the rectangular pack container 11 has been described. However, the present invention can also be applied to a circular pack container. The description will be as shown in FIGS. The sealing film for sealing the opening of the circular pack container is also bonded to the pack container in the same manner as shown in FIGS. FIG. 24 is an example in which only one outward peeling start portion 41 is provided in an inclined shape on the circular ring-shaped peeling film 36, and the whole can be peeled off at once, and the example of FIG. An example in which two outward peeling start portions 41 are provided at intervals is shown. Reference numeral 42 denotes a cut portion, which is similarly inclined.

図２６は、円型パック容器用の円型リング状の剥離用フィルム３６の例であり、ただ１個の内向きの剥離開始部５１を傾斜状に設けている。５２は切り込み部を示す。図２７
は、円型リング状の剥離用フィルム３６に等間隔で３個の内向きの剥離開始部５１を傾斜状に設けた例を示す。 FIG. 26 shows an example of a circular ring-shaped peeling film 36 for a circular pack container, in which only one inward peeling start portion 51 is provided in an inclined shape. Reference numeral 52 denotes a cut portion. FIG.
Shows an example in which three inward peeling start portions 51 are provided in an inclined manner on a circular ring-shaped peeling film 36 at equal intervals.

剥離開始部２１、３１、４１、５１を有する剥離用フィルム１６、１６′、１６″、３６を製造するには、その形状に作られた刃物で打ち抜けばできるが、打ち抜いた剥離用フィルム１６…を使用することは、既存のパック容器を使用して本発明のパック容器１１を製造する場合には有効である。特にフランジ部１２の外側についた剥離開始部２１、４１の剥離用フィルム１６…の場合、容器メーカーで量産するには非常に複雑な装置が必要となるため、上記の方式が有効である。   In order to manufacture the peeling films 16, 16 ′, 16 ″, 36 having the peeling start portions 21, 31, 41, 51, it can be punched out with a blade made in that shape, but the punched peeling film 16 Is effective when the existing pack container is used to manufacture the pack container 11 of the present invention, particularly the peeling film 16 of the peeling start parts 21 and 41 on the outside of the flange part 12. In the case of ..., since a very complicated device is required for mass production by a container manufacturer, the above method is effective.

上記において使用するフィルムは、いずれもいわゆるイージーオープン或いはイージーピールなどと称されるフィルムを使用することが望ましい。このようなフィルムは表面が熱に強く破れにくいポリエチレンテレフタレート（ＰＥＴ）やポリエステル（ＵＰ）等のフィルムから成り、裏面には接着面として使用されるシーラントフィルム（例えば密封用フィルム１５には東セロ社製ＣＭＰＳ０１３Ｃや剥離用フィルムには同ＣＭＰＳ２０１Ｃ）等のフィルムから成る貼り合わせフィルムが適する。上記は例示であり、要するに破れに対して強度のあるフィルムと接着手段となるフィルムの複合フィルム、或いは破れ強度と接着性能を併有するフィルムであれば、温度変化によるそれぞれの特性を利用して、密封用フィルム１５や剥離用フィルム１６…として使用することができる。   As for the film used in the above, it is desirable to use a film called so-called easy open or easy peel. Such a film is made of a film such as polyethylene terephthalate (PET) or polyester (UP) whose surface is strongly resistant to heat and hard to tear, and a sealant film used as an adhesive surface on the back surface (for example, the sealing film 15 is made by Tosero) A laminated film made of a film such as CMPS201C) is suitable for CMPS013C and the peeling film. The above is an example, and in short, if it is a composite film of a film that is strong against tearing and a film that becomes an adhesive means, or a film that has both tear strength and adhesive performance, using the respective characteristics due to temperature changes, It can be used as the sealing film 15 or the peeling film 16.

図３０は包装工程を示すもので、内側接着部用第１ヒーター６３と外側接着部用第２ヒーター６４が、接着を終えて上に持ち上がった時のものである。６１は容器を乗せるバケット、６２は緩衝用のゴムを示す。バケット６１は１工程毎に矢印の向きに従って（Ｂ）から（Ｃ）へ、（Ｃ）から（Ｄ）へと進む。６５は密封用フィルム１５のガイド用ローラーを示す。パック容器１１が（Ｂ）の位置のときは、パック容器１１と密封用フィルム１５とは接着していないが、（Ｃ）の位置の時には密封用フィルム１５と内側接着部２３の部分が弱接着している。Ｄ）に来るとフランジ部１２の上面の外側接着部２４の形成の工程となり、強い接着の形成が行われるが、剥離用フィルム１６との接着は強くならない。第１ヒーター６３は内側接着部２３だけではなく、フランジ部１２の全体を接着させても良い。この第１ヒーター６３と第２ヒーター６４は前後を入れ換えても差し支えない。   FIG. 30 shows a packaging process when the first heater 63 for the inner adhesive portion and the second heater 64 for the outer adhesive portion are lifted up after finishing the bonding. Reference numeral 61 denotes a bucket on which the container is placed, and 62 denotes a cushioning rubber. The bucket 61 proceeds from (B) to (C) and from (C) to (D) according to the direction of the arrow for each process. Reference numeral 65 denotes a guide roller for the sealing film 15. When the pack container 11 is in the position (B), the pack container 11 and the sealing film 15 are not bonded, but when the pack container 11 is in the position (C), the sealing film 15 and the inner bonding portion 23 are weakly bonded. is doing. In D), the outer adhesive portion 24 on the upper surface of the flange portion 12 is formed, and strong adhesion is formed, but the adhesion to the peeling film 16 is not strong. The first heater 63 may bond not only the inner bonding portion 23 but the entire flange portion 12. The first heater 63 and the second heater 64 may be interchanged.

本発明に係る開封容易な密封容器の製造では、包装工程の直前でこの容器を製造（市販の普通容器の改造）する場合と、予め容器メーカーで製造する場合の、２通りの方法が考えられる。まず、市販の普通容器を改造して本発明の密封容器を作る場合は、加工機の刃物によってパック容器１１のフランジ部１２に破断部１９を形成し、パック容器１１を伏せた上から、別の加工機の刃物で打ち抜かれた剥離用フィルム１６…をかぶせ、ヒーターによって接着させる。その後、容器の中に物が入っていない場合は物を入れ、密封用フィルム１５を使用して再度図３０の包装機で包装し、本発明を適用した容器入り製品を作製する。   In the manufacture of an easily opened sealed container according to the present invention, there are two methods, that is, when the container is manufactured immediately before the packaging process (modification of a commercially available ordinary container) and when it is manufactured in advance by a container manufacturer. . First, when making a sealed container of the present invention by remodeling a commercially available ordinary container, a rupture portion 19 is formed in the flange portion 12 of the pack container 11 with the cutting tool of the processing machine, and the pack container 11 is turned down. A peeling film 16 punched with a blade of the processing machine is put on and adhered by a heater. Thereafter, if there is no item in the container, the item is put in, and the product is packaged again with the packaging machine of FIG. 30 using the sealing film 15 to produce a product in a container to which the present invention is applied.

容器メーカーで製造する場合は、前記のように１個づつ製造してもよいが経費が非常に掛かる点問題である。そこで原反シートを成形機で横一列例えば１０個位づつ成形し、その後１列づつ外縁を打ち抜いて容器を作る際、成形された容器が伏せられた状態で出て来るのを利用し、この成形機と打ち抜き機との間に、成形された容器のフランジ部１２に破断部１９を横１列１０個形成する装置において破断部１９を形成し、その上に剥離用フィルム５３の原反に同じく横１列１０個、中だけ打ち抜く装置でフィルムを打ち抜き（角
型、図２８、丸型、図２９）、成形され破断部を形成されたパック容器１１が進むにつれ剥離用フィルム１６がパック容器１１にはまり込むようにし、さらに熱ヒーターによって成形品と剥離用フィルム１６が一体化した後、打ち抜き機によって成形シートと剥離用フィルム１６を一緒に打ち抜くことによって、大量に安く作ることができる。５４は切断予定線を示す。ただし、フランジ部１２の外側に剥離開始部２１、４１があると、パック容器１１の打ち抜きと剥離用フィルム１６の打ち抜きで寸法が異なるため技術的に大変難しくなる。ところが内側の剥離開始部３１、５１の場合には打ち抜き寸法が同じなので、簡単であるばかりでなく、打ち抜き型等変更の必要がないためさらに安く製造できる利点がある。 In the case of manufacturing by a container manufacturer, it may be manufactured one by one as described above, but this is a problem in that the cost is very high. Therefore, the raw sheet is formed in a horizontal row, for example, about 10 pieces by a molding machine, and then the outer edge is punched out one row at a time to make a container. Between the molding machine and the punching machine, the breaking part 19 is formed in an apparatus for forming ten breaking parts 19 in a horizontal row on the flange part 12 of the molded container, and on the raw film of the peeling film 53 thereon. Similarly, the film 16 is punched with a device that punches only 10 rows in a horizontal direction (square shape, FIG. 28, round shape, FIG. 29). 11, and after the molded product and the release film 16 are integrated with a heat heater, the molded sheet and the release film 16 are punched together by a punching machine. It can be made. Reference numeral 54 denotes a planned cutting line. However, if there are peeling start portions 21 and 41 on the outside of the flange portion 12, the dimensions are different between the punching of the pack container 11 and the punching of the peeling film 16, which is technically very difficult. However, in the case of the inner peeling start portions 31 and 51, since the punching dimensions are the same, not only is it simple, but there is an advantage that the punching die and the like do not need to be changed, so that it can be manufactured more inexpensively.

上記のように、本発明に係る開封容易な密封容器では、パック容器のフランジ部が内側部分と外側部分とに最初から切れているのでどんなに柔軟な材質でも使用でき、また、硬い材質でも同じように作れることができる。さらに本発明によればプラスチック製の容器ばかりではなく、アルミ箔容器や紙製容器、木材から作った合板容器等あらゆる材質の容器に応用することができる。   As described above, in the easily opened sealed container according to the present invention, since the flange portion of the pack container is cut from the beginning to the inner part and the outer part, any flexible material can be used, and the same can be applied to a hard material. Can be made. Furthermore, the present invention can be applied not only to plastic containers but also to containers of any material such as aluminum foil containers, paper containers, and plywood containers made of wood.

本発明に係る開封容易な密封容器の第１の例を示す平面図。The top view which shows the 1st example of the airtight container which is easy to open based on this invention. 同上の正面図。The front view same as the above. 同じく下面図。Similarly bottom view. 密封用及び剥離用フィルムを接着する前の破断部が形成されたパック容器の平面図。The top view of the pack container in which the fracture | rupture part before bonding the film for sealing and peeling is formed. 同じく断面図。Similarly sectional drawing. 同じくフランジ部の断面図。Sectional drawing of a flange part similarly. フランジ部に剥離用フィルムを接着した断面図。Sectional drawing which adhered the film for peeling to the flange part. さらに密封用フィルムを接着した断面図。Furthermore, sectional drawing which adhered the film for sealing. 剥離用フィルムの下面図。The bottom view of the film for peeling. フランジに剥離用フィルムを接着する状態の説明図。Explanatory drawing of the state which adhere | attaches the film for peeling on a flange. 被包装物を密封する状態を示す説明図。Explanatory drawing which shows the state which seals a to-be-packaged object. 剥離開始状態を示す正面図。The front view which shows a peeling start state. 図１２に対応する下面図。FIG. 13 is a bottom view corresponding to FIG. 12. 開封状態を示す斜視図。The perspective view which shows an open state. 剥離用フィルムの変形例を示す平面図。The top view which shows the modification of the film for peeling. 剥離用フィルムの変形例を示す平面図。The top view which shows the modification of the film for peeling. パック容器の変形例を示す平面図。The top view which shows the modification of a pack container. パック容器の他の変形例を示す平面図。The top view which shows the other modification of a pack container. 内向き剥離開始部の例を示す平面図。The top view which shows the example of an inward peeling start part. 図１９の剥離用フィルムを使用したパック容器の正面図。The front view of the pack container using the film for peeling of FIG. 同じく側面図。Similarly side view. 内向き剥離開始部の例を示す平面図。The top view which shows the example of an inward peeling start part. 同じく他の例を示す断面図。Sectional drawing which similarly shows another example. 剥離用フィルムの変形例の平面図。The top view of the modification of the film for peeling. 剥離用フィルムの変形例の平面図。The top view of the modification of the film for peeling. 剥離用フィルムの変形例の平面図。The top view of the modification of the film for peeling. 剥離用フィルムの変形例の平面図。The top view of the modification of the film for peeling. 剥離用フィルムの生産例を示す平面図。The top view which shows the production example of the film for peeling. 剥離用フィルムの生産例を示す平面図。The top view which shows the production example of the film for peeling. 密封装置の１例を示す断面説明図。Cross-sectional explanatory drawing which shows one example of a sealing device.

符号の説明Explanation of symbols

１０ 密封容器
１１ パック容器
１２ フランジ部
１３ 内側部分
１４ 外側部分
１５ 密封用フィルム
１６、１６′、１６″、３６ 剥離用フィルム
１７ 内側接着部
１８ 外側接着部
１９ 破断部
１９ａ 切り離し線
１９ｂ ブリッジ部
２１、３１、４１、５１ 剥離開始部
２２、３２、４２、５２ 切り込み部
２３ 弱接着部分
２４ 強接着部分
２５ 被包装物
５３ 原反フィルム

DESCRIPTION OF SYMBOLS 10 Sealing container 11 Pack container 12 Flange part 13 Inner part 14 Outer part 15 Sealing film 16, 16 ', 16 ", 36 Peeling film 17 Inner adhesive part 18 Outer adhesive part 19 Breaking part 19a Detachment line 19b Bridge part 21, 31, 41, 51 Peeling start part 22, 32, 42, 52 Cut part 23 Weakly bonded part 24 Strongly bonded part 25 Packaged article 53 Original film

Claims (3)

プラスチック製パック容器の開口を密閉するために、開口を囲んでいるフランジ部に密封用フィルムを接着した構成を有する密封容器であって、フランジ部を、開口寄りの内側部分と周縁寄りの外側部分との内外２部分に分離可能な構造とし、フランジ部の下面に剥離用フィルムを接着し、剥離用フィルムの一部にフランジ部より外方又は内方へ張り出した剥離開始部を設け、剥離用フィルムをフランジ部に沿って剥離することにより、フランジ部を内外２部分に分離した切り離し線と、内外２部分を連絡しているブリッジ部とを露出可能にしたことを特徴とする開封容易な密封容器。 A sealed container having a structure in which a sealing film is bonded to a flange portion surrounding an opening in order to seal the opening of the plastic pack container, wherein the flange portion includes an inner portion near the opening and an outer portion near the periphery. It can be separated into two parts inside and outside, and a peeling film is adhered to the lower surface of the flange part, and a peeling start part protruding outward or inward from the flange part is provided on a part of the peeling film for peeling. The film is peeled along the flange portion, thereby making it possible to expose the separation line separating the flange portion into the inner and outer two portions and the bridge portion connecting the inner and outer two portions. container. パック容器は、ポリエチレンテレフタレート、ポルエステル、ポリプロピレン、ポリエチレン又はこれらと同効の素材より成る請求項１記載の開封容易な密封容器。 The sealed container according to claim 1, wherein the pack container is made of polyethylene terephthalate, porester, polypropylene, polyethylene, or a material having the same effect. 剥離開始部はその張り出した部分の付け根に、切り込みを有している請求項１記載の開封容易な密封容器。
The sealed container according to claim 1, wherein the peeling start portion has a cut at the base of the protruding portion.
JP2005231389A 2005-08-09 2005-08-09 Easy-to-open sealed container Expired - Fee Related JP4025338B2 (en)

Priority Applications (5)

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JP2005231389A JP4025338B2 (en) 2005-08-09 2005-08-09 Easy-to-open sealed container
US11/988,914 US7762421B2 (en) 2005-08-09 2006-08-07 Easy-open sealed container
PCT/JP2006/315979 WO2007018300A1 (en) 2005-08-09 2006-08-07 Easily unsealable sealing container
CN200680028866A CN100595112C (en) 2005-08-09 2006-08-07 Easily unsealable sealing container
KR1020087001632A KR100939513B1 (en) 2005-08-09 2006-08-07 Easily unsealable sealing container

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JP4025338B2 true JP4025338B2 (en) 2007-12-19

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JP6366997B2 (en) * 2014-05-20 2018-08-01 株式会社フジシール Package and method for producing the package
CN106477171A (en) * 2015-08-24 2017-03-08 林紫绮 Anti-tear paper structure of container
CN108153131A (en) * 2018-03-13 2018-06-12 珠海天威飞马打印耗材有限公司 Handle box
JP7045898B2 (en) * 2018-03-27 2022-04-01 日本碍子株式会社 A method for masking a honeycomb molded body, a method for forming a sealing portion of the honeycomb molded body, and a method for manufacturing a honeycomb fired product.

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JPS58125446A (en) * 1982-01-13 1983-07-26 株式会社吉野工業所 Vessel with breaking band and its manufacture
JPS6238861U (en) * 1985-08-29 1987-03-07
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JPS6295567U (en) * 1985-12-04 1987-06-18
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JPS6437370A (en) * 1987-07-29 1989-02-08 Mitsubishi Plastics Ind Distribution package
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JP2001328666A (en) * 2000-05-19 2001-11-27 Meisei Sansho Kk Well-closed container
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JP2006021791A (en) * 2004-07-07 2006-01-26 Fujimura Kogyo:Kk Hermetically sealed container with snap-off portion
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KR100939513B1 (en) 2010-02-03
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KR20080030037A (en) 2008-04-03

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